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Population changes and the distribution of a herd of feral goats ( Capra sp.) on Rhum, Inner Hebride, 1960–78
Author(s) -
Boyd Ian L.
Publication year - 1981
Publication title -
journal of zoology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.915
H-Index - 96
eISSN - 1469-7998
pISSN - 0952-8369
DOI - 10.1111/j.1469-7998.1981.tb03445.x
Subject(s) - biology , intraspecific competition , herd , cave , population , competition (biology) , ecology , zoology , demography , sociology
Feral goats are distributed along the western coastal fringe of the island. Male and female home ranges are distinct and are associated with coastal shelter caves. The population has fluctuated cylically since records began in 1960. This cycle has a period of about six years and is maintained by changing levels of intraspecific competition at different population sizes brought about by variation in the total reproductive output of different generations of females.